CVE-2026-9467

A vulnerability was identified in debugmcp mcp-debugger up to 0.20.0. Impacted is the function handleGetSourceContext of the file src/server.ts. The manipulation leads to path traversal. The attack is possible to be carried out remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS v4.0

2.1 LOWCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS v2.0

4.0 MEDIUMAV:N/AC:L/Au:S/C:P/I:N/A:N

EPSS

0.44% chance of exploitation in the next 30 days, 37th percentile

Published

2026-05-25

Updated

2026-05-26

Proof-of-concept exploits (1)

• hyk6225/public_exp/issues/1

References

• CVE Record
• NVD entry

Related

• CVE-2026-9466
• CVE-2026-9468
• CVE-2026-9465
• CVE-2026-9469
• CVE-2026-9464
• CVE-2026-9470